Is there a console command to change the time of day?

[Usernamehere]

And no, I can't use the wait feature because there are enemies nearby. No, I can't kill those enemies.

[Rakdos28]

Here's a link from the official wikia page with all of the console commands:

http://fallout.wikia.com/wiki/Fallout_3_console_commands

The one you need would be probably the following:

"set gamehour to <time> - sets the gamehour to the entered value. Change applies only when player unpauses the game. Before making any changes to the gamehour using GetCurrentTime might be useful."

I hope that helps.